| 27 
| 97 
Faminy IV.—FRAGILARIE4—con. 
Name. 
Driatoma, Dee. 
elongatum, dg. .... 
grande, 7. Sp....... 
ASTERIONELLA, Hass. 
Bleakleyii 
Ralfsii 
vulgare, Bory...,..| Queen’s Park 
DIATOMACES, 
Locatiry. 
Lache Lane, Chester 
Mostyn 
Estuary of Dee....... 
Estuary of Dee........ 
| July ’72.. 
| April ’74.. 
| April’74.. 
31. 
OccuRRENCE. 
| March ’ 12... 0@ 
.vr 
May, ’71 ve 
.vI 
vr 
Both these last forms were got in the tow-net very abundantly, 
and having burnt them on the thin glass I have preserved them 
in their natural state. 
Bleakleyii is not very perfectly siliceons, 
and on this account it is difficult to figure or describe except in 
the fresh state. 
Nirzscuia, Hass. 
nn ne UE ann EE UEIEnE NEESER ENE 
2 acicularis, Sm. ....| Flookersbrook, Chester ..| May’71....ve 
3 amphioxys, Sm. Queen’s Park, Chester ..| May’71l....ve 
7 bilobata, Sm....... Queen’s Ferry ........55 WEST a 32 ost 
32 birostrata, Sm. ....| Mostyn ........eeeeeeee July ’74....vr 
22 Brebissonii, Sm....| Llangollen ...........+.+ Aug. ’72..... c 
29 closterium, Sm. ....| Ince Marsh .........4.. May ’74....v1r 
9 curyula, Kutz. .....,| Lache Lane, Chester ....| March ’72....¢ 
2 dubia; Si. sscccces Flookersbrook ........+- May ’71....ve 
20 lanceolata, Sm. ....| Mostyn....... eeihvee oes] July ’75....V2 
1 linearis, Sm. ...... Heron Bridge ..........| April’7l...ve 
9 minutissima, Sm. ..| Lache Lane, Chester ....| March ’72..vr 
10 obtusa, 7. sp. ......| Helsby Marsh .......... March '72..vr 
56 a, 7. Sp. =| SOLON, BrIdee oo. «icine ed Feb. ’72....v¢ 
45 palea, Kuéz......... Handbridge .......0.e++»| NOV. ’71 ....€ 
29 plana, Sm. ........| Ince Marsh .........++- May ’74....vr 
6 sigma, Sm MPa WP MEOREVEE. S15 cicis tae Sis. els ae July ’71....ve 
2 sigmoidea, Sm. ....| Flookersbrook .........- May ’71....v¢ 
20 scalaris, Sm. ...... Poly wells 2). 20 ere May ’75....vr 
15 tenia, Sm. .e..sees Connah’s Quay ......+. May’72....ve 
30 WITT Ata ects scat |) (Cala ieee Bae Boeee July ’74....Vr 
4 WIVAK, 1%. 5D." alse we Heron Bridge ...... eee] MEY dca s Wx 
30 distans, 2. Sp- 6.2200) COLWYD wecessenverececs July ’74....Vr 
AMPHIPLEURA, Kutz. 
22 pellucida..........| Llangollen...... AADPIARE Aug. ’72...v¢ 
FAMILY V.—SURIRELLEZ. 
Baciiuaria, Gmel. 
6 paradoxa, Gmel..... Mostyn weccescesseeees July ’71....v¢ 
Homocriapia, Ag. 
20 sigmoidea, x. sp. Queen’s Ferry .....,....| Dec. ’71....v4r 
